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AT28C64 PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AT28C64
기능 64K (8K x 8) Parallel EEPROMs
제조업체 ATMEL Corporation
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AT28C64 데이터시트, 핀배열, 회로
Features
Fast Read Access Time – 120 ns
Fast Byte Write – 200 µs or 1 ms
Self-timed Byte Write Cycle
Internal Address and Data Latches
Internal Control Timer
Automatic Clear Before Write
Direct Microprocessor Control
READY/BUSY Open Drain Output
DATA Polling
Low Power
30 mA Active Current
100 µA CMOS Standby Current
High Reliability
Endurance: 104 or 105 Cycles
Data Retention: 10 Years
5V ± 10% Supply
CMOS and TTL Compatible Inputs and Outputs
JEDEC Approved Byte-wide Pinout
Commercial and Industrial Temperature Ranges
Description
The AT28C64 is a low-power, high-performance 8,192 words by 8-bit nonvolatile elec-
trically erasable and programmable read only memory with popular, easy-to-use fea-
tures. The device is manufactured with Atmels reliable nonvolatile technology.
(continued)
Pin Configurations
Pin Name
A0 - A12
CE
OE
WE
I/O0 - I/O7
RDY/BUSY
NC
DC
Function
Addresses
Chip Enable
Output Enable
Write Enable
Data Inputs/Outputs
Ready/Busy Output
No Connect
Dont Connect
TSOP
Top View
PDIP, SOIC
Top View
RDY/BUSY (or NC)
A12
A7
A6
A5
A4
A3
A2
A1
A0
I/O0
I/O1
I/O2
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 VCC
27 WE
26 NC
25 A8
24 A9
23 A11
22 OE
21 A10
20 CE
19 I/O7
18 I/O6
17 I/O5
16 I/O4
15 I/O3
LCC, PLCC
Top View
64K (8K x 8)
Parallel
EEPROMs
AT28C64
AT28C64X
OE
A11
A9
A8
NC
WE
VCC
RDY/BUSY (or NC)
A12
A7
A6
A5
A4
A3
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28 A10
27 CE
26 I/O7
25 I/O6
24 I/O5
23 I/O4
22 I/O3
21 GND
20 I/O2
19 I/O1
18 I/O0
17 A0
16 A1
15 A2
A6 5
A5 6
A4 7
A3 8
A2 9
A1 10
A0 11
NC 12
I/O0 13
29 A8
28 A9
27 A11
26 NC
25 OE
24 A10
23 CE
22 I/O7
21 I/O6
Note: PLCC package pins 1 and 17 are
DONT CONNECT.
Rev. 0001H12/99
1




AT28C64 pdf, 반도체, 판매, 대치품
DC and AC Operating Range
Operating
Temperature (Case)
VCC Power Supply
Com.
Ind.
AT28C64-12
0°C - 70°C
-40°C - 85°C
5V ± 10%
AT28C64-15
0°C - 70°C
-40°C - 85°C
5V ± 10%
Operating Modes
Mode
Read
Write(2)
Standby/Write Inhibit
Write Inhibit
Write Inhibit
Output Disable
Chip Erase
Notes:
1. X can be VIL or VIH.
2. Refer to AC programming waveforms.
3. VH = 12.0V ± 0.5V.
CE
VIL
VIL
VIH
X
X
X
VIL
OE
VIL
VIH
X(1)
X
VIL
VIH
VH(3)
DC Characteristics
Symbol
ILI
ILO
ISB1
ISB2
ICC
VIL
VIH
VOL
VOH
Parameter
Input Load Current
Output Leakage Current
VCC Standby Current CMOS
VCC Standby Current TTL
VCC Active Current AC
Input Low Voltage
Input High Voltage
Output Low Voltage
Output High Voltage
Condition
VIN = 0V to VCC + 1V
VI/O = 0V to VCC
CE = VCC - 0.3V to VCC + 1.0V
CE = 2.0V to VCC + 1.0V
Com.
Ind.
f = 5 MHz; IOUT = 0 mA
CE = VIL
Com.
Ind.
IOL = 2.1 mA
= 4.0 mA for RDY/BUSY
IOH = -400 µA
AT28C64-20
0°C - 70°C
-40°C - 85°C
5V ± 10%
AT28C64-25
0°C - 70°C
-40°C - 85°C
5V ± 10%
WE I/O
VIH DOUT
VIL DIN
X High Z
VIH
X
X High Z
VIL High Z
Min Max Units
10 µA
10 µA
100 µA
2 mA
3 mA
30 mA
45 mA
0.8 V
2.0 V
0.45 V
2.4 V
4 AT28C64(X)

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AT28C64 전자부품, 판매, 대치품
Data Polling Characteristics(1)
Symbol Parameter
tDH
tOEH
tOE
tWR
Notes:
Data Hold Time
OE Hold Time
OE to Output Delay(2)
Write Recovery Time
1. These parameters are characterized and not 100% tested.
2. See AC Read Characteristics.
Data Polling Waveforms
AT28C64(X)
Min Typ Max Units
10 ns
10 ns
ns
0 ns
Chip Erase Waveforms
tS = tH = 1 µsec (min.)
tW = 10 msec (min.)
VH = 12.0 ± 0.5V
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